Question

A gym offers regular memberships for $80 per month and off-peak memberships for $60 per month. Last month, the gym sold a total of 420 memberships for a total of $31,100. How many memberships sold were regular memberships?

A)125
B)140
C)235
D)295

Answer 1

@TrojanPoem

Answer 2

Let regular memberships = y

off-peak x

x+ y = 420

80 y + 60x = 31100

You can have equations in two unknowns , solve for x , y and you 've the answer

Answer 3

CAN YOU JUST HELP ME IM TIMED PLZZ

Answer 4

I STILL HAVE 6 QUEESTIONS

Answer 5

Well, the question says, it sold 420 membership ( we don't know which is regular and which is off-peak) but we know that

off-peak membership sold + regular membership sold = 420

and the total gain is 31100

so

80 * number of off-peak sold + 60 * regular membership sold = 31100 (total money gained)

for the ease I dubbed off-peak member ship y
regular member ship x

so i got

x+y = 420 -> (1)

80y + 60x = 420

4y + 3x = 21 (2)

Solve both equation (1), (2) x is your solution.

Answer 6

THANK U CAN U HELP ME WITH MORE

Answer 7

Sure.

Answer 8

Solve the system of equations by substitution. What is the solution for x?

2x + y = 1
4x + 2y = −1

x = 0
x = 2
There is no x value, as there is no solution.
x can be any value, as there is an infinite number of solutions.

Answer 9

2x +y = 1
2x + y= -1

That doesn't make sense (2x +y) can't have two values at the same time so

there is no x value as there is no solution to this system of equations

again , you could use creamer rule to solve it or using matrices ranks as a better solution.

Answer 10

WATS THE CREAMER RULE