11. If f(x) = 2x – 7, then for what value of x is f(x) = -4
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How many degrees does the hour hand move from 3: 00 to 5: 30?

Average acceleration: i have no idea how to do this.

Find the power set of each of these sets, where a and b are distinct elements. a) {a} b) {a, b} c) {1, 2, 3, 4} show steps