Best has knitted 5/8 of the scarf she is making has she needed more than one half of the scarf can't find the equivalent fraction and ace for 1/2

Which problem could be  solved  by evaluating the expression  7×(−3)7×-3?

The graph below shows the height of a projectile t seconds after it is launched. if acceleration due to gravity is -16 ft/s2, which equation models the height of the projectile correctly?

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.