The price of apples went from $1.99 per lb to $3.19 per lb in four years. find the rate of change of the price of apples.
a) $0.30 per lb per year
eliminate
b) $0.50 per lb per year
c) $0.80 per lb per year
d) $1.10 per lb per year

10

step-by-step explanation:

7+3=10

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