Oliver needs to save at least $1500 to buy a computer. he has already saved $650. how much more does he need to save? write and solve an inequality.
a) x + 650 ≥ 1500; x ≥ 850
b) x + 650 ≤ 1500; x ≤ 850
c) x + 1500 ≤ 650; x ≤ -850
d) x + 1500 ≥ 650; x ≥ -850

Runner ran 1 4/5 miles on monday and 6 3/10 on tuesday. how many times her monday’s distance was her tuesdays distance

I'm confused on this could anyone me and show me what i need to do to solve it.

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?