1. Which of the following expressions is 5 times as much as the sum of r and s? *
A. 5 × r + s
B. 5 + r + s
C. r + s × 5
D. (r + s) × 5

Answer is D

Step-by-step explanation:

you want to multiply 5 to r and s so then r and s. so the forth one would be distributed into both r and s.

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

r = 78539458390583095803458309458039485093485 or just 3

step-by-step explanation: