In the formula i=p. r.t, what does r stand for?
a. rate: the percent that interest is paid annually as a decimal
b. ratio: the size of the interest interval compared to time
c. return: how much money you end up earning
d. reserves: how much money you have in the investment

a. Rate: the percent that interest is paid annually as a decimal

Step-by-step explanation:

Given the simple interest formula:

I=P*r*t

I refers to interest

P refers to principal (initial value)

r refers to interest rate (decimal)

and t refers to time (years)

step-by-step explanation:

always plug in x. in this case, x equals 4.

i'm going to first solve 4(2+3x)

1) 4(2+3(4)) use pemdas to solve.

i'm going to multiply whats in the parenthesis first, so 3 times 4=12.

2)4 (2+12) i'm then going to multiply 4 by both numbers in the parenthesis (because multiplying comes before adding)

4 times 2= 8.   4 times 12= 48

4) (8+48)= 56 (answer)

i'm then going to solve 8+12x and plug in 4 for x.

1) 8 +12(4)

multiplying comes before adding, so i'm gonna multiply 12 and 4.

12 times 4= 48.

2) 8+48=56

both equal the same!