(c) 5p + 7 = 12 - 3p
8p = 5
p = 5/8 = 0.625
5. (a)
7p + 2 = 5p + 8
2p = 6
p = 3
(b) 7r + 2 = 5r - 20
2r = -22
r = -11
1+1/x^2 when multiplied by x^2 we get: (x^2+1)/x^2.
Answer:
12.68 de
Step-by-step explanation:
If 32.16 includes the sales tax....then the price before the sales tax will be less then 32.16
that only leaves 2 choices.....
so lets check them...
7% sales tax on 2.25 = 0.07(2.25) = 0.16....so if u spent 2.25 on groceries and added the sales tax of 16 cents....then u would have spent 2.41...thats a long way from 32.16
if u spent 30.06...with 7% sales tax....u would spend 30.06 + 0.07(30.06) = 32.16
so the cost of the groceries before the sales tax is 30.06 <==
