11) Solve the system by the elimination method. Check the solution.

x + 5y = 25
3x + 4y = 20

Which expression is equivalent to 16 in exponential form? a) 4 × 4 b) 8 × 2 c) 23 d) 24

Having a hard time understanding this question (see attachment).

Awater truck is filling a swimming pool. the equation that represents this relationship is y=19.75x where y is the number of gallons of water in the pool and x is the number of minutes the truck has been filling the pool.