The function f(x) = 6.50x + 18 relates how much sam pays to his tennis club, f(x), to the number of matches, x, he earns in a month. what is the value and meaning of f(10)?

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?

1: 4 if the wew 35 surfboards at the beach how many were short boards?

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.