Which expression can be substituted for x in the top equation of the following system to solve the system by substitution? 2x-7y=15 x+4y=6

42 decreased by twice gorans savings

A function is expressed by the equation y=0.3x-6. For what value of the independent variable will the value of the function be equal to - 6; - 3; 0?

A tank hold a volume of 32m3 what is the new volume of an enlarged tank of the scale factor is 5?

A customer buys 15.5 cheese pizzas which are $10.50 each. What is the total? Round it to the nearest hundredth.

The sum of the interior angles of a 7-gon is

Solve this inequality: 3 (x + 6) - 2 (x + 2) > (or equal to) 10

Is 4/5 greater than 1/3

Martha always tries to exercise at least 30 minutes a day. Write an inequality to represent the number of minutes Martha exercises each day.

A swimming pool has perimeter of 72 feet. The short sides measure 16 feet. What is the length of the longer sides of the pool

At the beginning of an environmental study, a forest covered an area of 1500km2. since then, this area has decreased by 7.1% each year. let t be the number of years since the start of the study. let y be the area that the forest covers in km2.