How can the relationship of the cost of a meal (c), tip percentage (p), and total bill (t) be represented algebraically?

( c ⋅ p 100 ) + c = t \left(c\cdot\frac{p}{100}\right)+c\ =t ( c ⋅ 1 0 0 p ) + c = t

c ⋅ p 100 = t c\cdot\frac{p}{100}=t c ⋅ 1 0 0 p = t

c ⋅ p = t c\cdot p=t c ⋅ p = t

What is the formula (equation) for simple interest?

i = p ⋅ r ⋅ t i=p\cdot r\cdot t i = p ⋅ r ⋅ t i = interest p = principal r = rate t = time

i = p ⋅ r ⋅ t i=p\cdot r\cdot t i = p ⋅ r ⋅ t i = interest p = percent r = rate t = time

i = p ⋅ r t i\ =p\cdot\frac{r}{t} i = p ⋅ t r i = interest p = percent r = rate t = time

i = p ⋅ r t i=p\cdot\frac{r}{t} i = p ⋅ t r i = interest p = principal r = rate t = time

How is the percent proportion represented algebraically?

p w = n 100 \frac{p}{w}\ =\ \frac{n}{100} w p = 1 0 0 n

p 100 = w ⋅ n \frac{p}{100}=w\ \cdot n 1 0 0 p = w ⋅ n

w 100 = p n \frac{w}{100}\ =\ \frac{p}{n} 1 0 0 w = n p

p = n ⋅ w p\ =\ n\ \cdot\ w p = n ⋅ w

How is the percent equation represented algebraically?

p = n ⋅ w p\ =\ n\ \cdot\ w p = n ⋅ w

p 100 = w ⋅ n \frac{p}{100}=w\ \cdot n 1 0 0 p = w ⋅ n

w 100 = p n \frac{w}{100}\ =\ \frac{p}{n} 1 0 0 w = n p

p w = n 100 \frac{p}{w}\ =\ \frac{n}{100} w p = 1 0 0 n

The principal in simple interest represents ___________________.

the amount of money borrowed or deposited

the percent interest for the year

the amount the bank owes you for being a customer at their bank

7th - Chapter 2 - Percents

Quiz

•

Mathematics

•

7th Grade

•

Practice Problem

•

Hard

•

CCSS

6.RP.A.3C, 7.RP.A.3, 7.RP.A.2C

+2

Standards-aligned

Jen Jeffries

Used 11+ times

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