How would one solve a question with negative exponents?
for example something like: 2^-3 + 2^-2

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

The graph and table shows the relationship between y, the number of words jean has typed for her essay and x, the number of minutes she has been typing on the computer. according to the line of best fit, about how many words will jean have typed when she completes 60 minutes of typing? 2,500 2,750 3,000 3,250

Using only the digits 5, 6, 7, 8, how many different three digit numbers can be formed if no digit is repeated in a number?