1) given the following equation f(x) = x2 + 5x - 4 can you have multiple outputs for each input value? why or why not? explain.

f(x)=x*2+5x-4

f(x)-x*2-5x+4=0

(f-5)x-x*2+4=0

-x*2+(f-5)x+4=0

x*2-(f-5)x-4=0

d=(-(f-5))*2-4(1)(-4)

d=f*2-10f+41

2 real solutions

-7/8

step-by-step explanation:

instead of subtracting you add the -6/8 and -1/8

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x