Amath teacher gave her class two tests. 70% of the class passed both tests and 80% of the class passed the first test. what percent of those who passed the first test also passed the second test?
70%
75.5%
87.5%
none of the choices are correct.

Kapil needed to buy a long wooden beam. he went to two sawmills that each charge an initial fee plus an additional fee for each meter of wood. the following equation gives the price (in dollars) of a wooden beam from the first sawmill as a function of its length (in meters). p = 5+20xp=5+20x

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

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists