Answer asap

marty ans stewart are stuffing envelopes with index cards. they are putting x index cards in each envelope. when they are finished, marty has 15 stuffed envelopes and 4 extra index cards, tewart has 12 stuffed envelopes and 6 extra index cards. write an expression in standard of index cards the boys started with. explain what your expression means

The total number of cards is 27x +10

Step-by-step explanation:

Each envelope gets x index cards

Marty:

15 envelopes and 4 extra cards

15*x +4 = total index cards

Stewart:

12 envelopes and 6 extra cards

12*x +6 = total index cards

The total number of cards is the sum of the cards for each of the boys

15*x +4 + 12*x +6

27x +10

The total number of cards is 27x +10

answer: your answer is c

step-by-step explanation:

a mantle plume is an upwelling of abnormally hot rock within the earth's mantle. as the heads of mantle plumes can partly melt when they reach shallow depths, they are thought to be the cause of volcanic centers known as hotspots and probably also to have caused flood basalts.

step-by-step explanation: