Ella is preparing for a 20-mile endurance cycling competition. she practices by cycling at a constant speed of 12 miles per hour for the first 4 miles. she increases her speed by 1.5 miles per hour every mile until she reaches 12 miles. after crossing 12 miles, she reduces her speed by 3 miles per hour each mile, till she reaches a speed of 15 miles per hour and keeps it constant until the end of her ride. from the graph shown below, find the interval where ella's speed is increasing.

[4, 12]

Step-by-step explanation:

So even though we don't have the graph, we can still figure this out. We just have to read the passage carefully.

Notice how the question says: She increases her speed by 1.5 miles per hour every mile until she reaches 12 miles.

So from 4 miles to 12 miles we are increasing.

Our interval is [4, 12] :)

65°

step-by-step explanation:

the total measure of a triangle is 180 degrees. 62 + 53 is 115.

180 - 115 = 65

answer: a.

step-by-step explanation: the answer is a. because, you need to converge the fractions to find a solution.