Decide if the function is an exponential function. if it is, state the initial value and the base. (2 points)
y = - 7.3 ⋅ 2x

exponential function; base = - 14.6; initial value = 1

exponential function; base = x; initial value = - 7.3

not an exponential function

exponential function; base = 2; initial value = - 7.3

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

the formula of a midpoint between a abd b: