Scooby made 70 percent on his science test. if he got 21 problems correct how many problems are on the test

30 pts, will mark brainliestwhat is the period of the sinusoidal function? (picture 1)what is the minimum of the sinusoidal function? (picture2)what is the maximum of the sinusoidal function? (picture 3)

Which is f(5) for the function –2x2 + 2x - 3?

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25