More Formulae, Equation and Function

Find the inverse of the function f(x) = 5x + 2

Jisung buys three notebooks which cost Rp 330 000. Chenle needs 10 notebooks and he decides to buy the one which is as same as Jisung's. How much money that Chenle needs to pay?

• Rp1 100 000

• Rp100 000

• Rp3 300 000

• Rp300 000

Jeno's mass is 3/4 of the mass of Jaemin. Jeno's mass is j, and Jaemin's mass a. The rule of the function is...

• a = 3/4 j

• j = 3/4 a

• a = 3/4 + j

• j = 3/4 + a

Represent each situation using an equation in terms of y. Solve each equation to find the value of: When eight is subtracted from half of a number, the result is 27.

• Y=60

• Y=27

• Y=35

• Y=70

For each statement, write an equation in terms of x and then and solve it. If a number is subtracted from nine the result is −5.

• X= 20

• X= -20

• X= 14

• X= 10

For each statement, write an equation in terms of x and then and solve it. The result of dividing a number by seven is 2.5.

• X= 20.5

• X= 17.5

• X= 14.5

• X= 10.5

The sales of the DreamScape album are ⅔ of the sales of the Candy album. If the sales of the DreamScape album are 270 albums, how many Candy albums were sold?

• 400 albums were sold

• 507 albums were sold

• 1127 albums were sold

• 405 albums were sold

The product of two consecutive intergers is 42. Form and solve a quadratic equation to find both possible pairs of intergers!

• The pairs of intergers are 6, 7 and -7, -6

• The pairs of intergers are 3, 4 and -3, -4

• The pairs of intergers are 6, 5 and -5, -6

• The pairs of intergers are 3, 7 and -3, -7

Make "y" the subject of this formulae! 3y=p

• y = 3p/p

• y = 3p

• y = p/3

• 3p=y

Make "b" the subject of this formulae! e-2c = nb + d

• e-2c-b-d = b

• e-2c-d/n = b

• e-2c-d = b/n

• e-2c-d = nb