Find each sum.
(3n2 – 5n + 6) + (–8n2 – 3n – 2) =

–11n2 – 8n – 4

–11n2 – 2n + 4

–5n2 – 8n + 4

–5n2 – 2n – 4

Factor the expression using gcf 9b+45

The weight of a radioactive isotope was 96 grams at the start of an experiment. after one hour, the weight of the isotope was half of its initial weight. after two hours, the weight of the isotope was half of its weight the previous hour. if this pattern continues, which of the following graphs represents the weight of the radioactive isotope over time? a. graph w b. graph x c. graph y d. graph z

Savannah had 40 iris blooms last year this year she had 15% more iris blooms how many more hours blooms did savannah have this year