Answer:
<em>The expression that represents her gross pay each day will be:
dollars.</em>
Step-by-step explanation:
Suppose, Harriet's gross pay each day 
So, her total gross pay for 7 work days 
Given that, her gross pay at the end of 7 work days is
dollars.
So, the equation will be.......

Thus, the expression that represents her gross pay each day will be:
dollars.
Answer:
x = 14
Step-by-step explanation:
Since they are similar triangles, their sides are proportional
12 : 15 :: 8 : x - 4
Product of extremes = Product of means
12 × ( x- 4 ) = 15 × 8
12x -48 = 120
12x = 120 + 48
12x = 168
x = 168/12
x = 14
Answer: Alberto caught up to Omar after 6 seconds, when Alberto had to run 54 meters.
Step-by-step explanation: