Substitute 8 for x and evaluate the expression below.
5(x + 1) - 20

Apple pie is removed from 350 degree oven. temperature of the pie t minutes after being removed id given by the function t(t)=72+268e-0.068t

Mario has $14.35 left in his wallet. he spent $148.43 for tablecloths. then, he spent $92.05 for napkins. how much money did mario have in his wallet to start with?

700 miles the train takes 5 hours to a travel the distance at what unit rate is the train traveling?