I think you’re answer is 42 slices of pizza.
the way i worked it out is by finding out how many minutes are in an hour (60 mins). after that i divided it by 10(mins), which would have gotten me 6. therefore i multiplied 7 x 6 which gave me 42.
Your answer is 25% because a change from 16 to 20 represents a positive change (increase) of 25%
You first need to know the equation A=pi x r^2. The equation you need for this problem is pi (3.14) x 3^2
Hi there! The answer is A.

In the graph we can see is a parabola (so B. cannot be the answer) with a vertex at the point (0, 0), which means the parabola is not translated upwards or downwards. Therefore, only A. can be correct, since all the other formulas include a translation downwards (which can be deduced from the -2 in the formula).