Dave has $15 to spend on an $8 book and two birthday cards (c) for his friends how much can he spend on each card if he buys a card for each friend

Mp model with mathematics explain how the number of text messages dario sent and the cost form an arithmetic sequence.then write an expression to find dario's text messaging bill if he sends n text messages over 250.

These question are hard can you me with answers

Find the area of a parallelogram with the given vertices. p(-2, -5), q(9, -5), r(1, 5), s(12, 5)