Tool bella bought 10 copies of jake's first cd at 14.56 per copy. how much did she spend?

(a) 145.60
(b) 1.46
(c) 0.15
(d) 1.456.00

Convert 2000 swiss francs to dutch guilders

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

Can someone me do math because i am having a breakdown rn because i don’t get it