45 because 1set equals 3 push ups and she did ten sets so 10sets equal 30 push ups and then her coach asked her to do 15 more so 30 plus 15 equals 45 so she did 45 push ups that day!
-1 is greater then 1.05 then 1.05 then 1.55
so the answer is C
DF is half of AC, so DF=25
The value of price (p) at a point of equilibrium is 13.4. Then the correct option is C.
<h3>What is the linear system?</h3>
A Linear system is a system in which the degree of the variable in the equation is one. It may contain one, two, or more than two variables.
The equation of the demand (D) and supply (S) is given below.

Where p is price.
At equilibrium, we have
D = S
Then

More about the linear system link is given below.
brainly.com/question/20379472