The last time david filled up his truck with gas, he paid $27.44 for 7 gallons. this time, he needs 15 gallons. if the price is the same, how much will he pay?

What is the measure of ac? 5 units 13 units 26 units 39 units

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers