Represent the answer of each of the following by an algebraic expression. (a) what is the result of adding 5 to an unknown number x and then multiply the sum by 4? (solution and formula ) (b) a car travels 70 km in and hour, find the distance travelled in y hours. (solution and formula )

(A) 4(x+5). Distribute the 4 (multiply both numbers by 4) and you get

4x+4*5

4x+20

(B) 70 km/h * y hours is 70y km, because you traveled 70 km every hour, so it's 70 times y.

answer: jasmine will bake 4/3 or 1 1/3 cookies in an hour

step-by-step explanation:

if u add 1/3 every 15 minutes after an hour u will have 4/3 or 1 1/3

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x