Explain to me how you got the anwser

Words/minute is the rate, and you are given both the number of words and the time taken, 245 words and 3.5 minutes respectively so:

r=245/3.5=70 wpm

I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.