What is the Doppler effect used by weather forecasters to measure?

moving clouds

air pressure

humidity

temperature

In the diagram below, dab and dac are adjacent angles. if mdac = 25°, what is mdab in degrees? what is mbac in degrees?

Find the average rate of change for f(x) = x2 − 3x − 10 from x = −5 to x = 10.

Eileen purchased 3.4 pounds of apples at the total cost of $19.72. if she purchases 6.2 pounds of apples at this store, how much would it cost?