The math club raised money for its spring banquet by washing vehicles. the club charged $3 per car and $5 per truck. the club earned a total of $510 for washing 122 cars and trucks combined. how many cars did the club wash?

3C + 5 T = 550

C+T= 122

PUT IN 1  T= 122-C

3C + 5 (122-C)=550

3C -5C + 610=550

-2C= 550 - 610= -30

C= 15

T= 122-15 = 107

Step-by-step explanation:

 50

Step-by-step explanation:

Let x be the number of cars and y be the number of trucks .

By considering the given information, we get

Multiply (1) by 3 , we get

Eliminate equation (3) from (2), we get

Put y= 72 in equation (1), we get

Hence, the number of cars did the club = 50

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)

a function could be identified in 3 ways either on a chart,graph, or ordered pairs. first a function is that each point has its own. the rule is that there can be many x's to one y but there can not be 2 x's at different y's. so on a graph when you put a straight line through the y's there should be one dot only to be a function.

step-by-step explanation: