Week of 4/26 PSSA Prep Question 3 of 15
Question: Which system(s) of equations have infinitely many solutions?
(please select one or more answers)
4x + y = 6
12x + 3y = -18
y = 7 - 5x
15x + 3y = 21
x = 0
x + 3y = 3
x + 3y = 22
x + 6y = 43

Acompany manufactures large valves, packed in boxes. a shipment consists of 1500 valves packed in 75 boxes. each box has the outer dimensions 1.2 x 0.8 x 1.6 m and the inner dimensions 1.19 x 0.79 x 1.59 m. the boxes are loaded on a vehicle (truck + trailer). the available capacity in the vehicle combination is 140 m3. each valve has a volume of 0.06 m3. - calculate the load factor on the box level (%). - calculate the load factor on the vehicle level (%). - calculate the overall load factor (%).

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?

The value of x in this system of equations is 1. 3x + y = 9 y = –4x + 10 substitute the value of y in the first equation: combine like terms: apply the subtraction property of equality: apply the division property of equality: 3x + (–4x + 10) = 9 –x + 10 = 9 –x = –1 x = 1 what is the value of y?