corinne has a job selling magazines .she earns $7.50 per hour plus 20% of the total amount of her sales . she also gets an allowance of $40 per week for gas. she knows her weekly earnings can be shown using the following expression 7.50h 0.20s 40 part a identify a coefficient, a varible and a constant in this expression
variable : an unknown number represented by a letter, such as h or s coefficient : the number multiplied by the variable...in this case, could be 7.50 or 0.20. constant : a number by itself, no variable...in this case, its 40
