1hour job costs $90
a 3 hour job costs $210
what is the initial amount and hourly rate

Aiden drives to school and back each day. the school is 16 miles from his home. he averages 40 miles per hour on his way to school. if his trip takes 1 hour, at approximately what speed does aiden drive home?

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

I’ve been trying all day to figure this puzzle out. i need the work for it aswell. it is a factoring polynomials tarsia. the image is below.