Substitute into worded formulae

A recipe states that the number of biscuits, b, made is given by the formula b = 2s + 4, where s is the number of scoops of dough. How many biscuits can be made with 3 scoops?

• 12

• 6

• 8

• 10

Tags

CCSS.HSF.IF.A.2

The total cost, C, of a meal is given by the formula C = p + 2d, where p is the price of the meal and d is the number of drinks. If the meal costs £15 and there are 3 drinks, what is the total cost?

• £21

• £18

• £15

• £24

Tags

CCSS.6.EE.B.6

In a class, the number of students, n, is calculated using the formula n = 5g + 10, where g is the number of groups. If there are 4 groups, how many students are there?

• 30

• 20

• 25

Tags

CCSS.HSF.IF.A.2

The formula for the distance, d, travelled is d = rt, where r is the rate in miles per hour and t is the time in hours. If a car travels at 60 mph for 2 hours, how far does it travel?

• 120 miles

• 100 miles

• 80 miles

• 140 miles

Tags

CCSS.HSF-LE.A.1B

The number of pages, p, in a book is given by the formula p = 3c + 12, where c is the number of chapters. If the book has 5 chapters, how many pages does it have?

• 21

• 24

• 30

• 27

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

The area, A, of a rectangle is calculated using the formula A = lw, where l is the length and w is the width. If the length is 8 cm and the width is 5 cm, what is the area?

• 50 cm²

• 45 cm²

• 35 cm²

• 40 cm²

Tags

CCSS.8.EE.C.7B

The formula for the temperature, T, in degrees Celsius is T = (F - 32) / 1.8, where F is the temperature in degrees Fahrenheit. What is the temperature in Celsius if F = 68?

• 25

• 22

• 18

• 20

Tags

CCSS.7.EE.B.4A

In a game, the score, s, is determined by the formula s = 10l + 5, where l is the number of levels completed. If a player has completed 6 levels, what is their score?

• 65

• 60

• 70

• 55

Tags

CCSS.HSF.IF.A.2

The total weight, w, of a shipment is given by w = 4p + 10, where p is the number of packages. If there are 5 packages, what is the total weight?

• 30

• 25

• 35

• 20

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

The formula for the perimeter, P, of a rectangle is P = 2l + 2w. If the length is 7 cm and the width is 3 cm, what is the perimeter?

• 20 cm

• 22 cm

• 18 cm

• 16 cm

Tags

CCSS.6.EE.A.2C