letters cost $1 each to send in the mail and packages cost $5 each the equation x + 5y = 25 describes how many letters and packages you can send for $25 find the y intercept and explain what it means

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.

How many heads would you expect if you flipped a coin twice? first, fill in the table below with the correct probabilities. hint: the sample space for flipping a coin twice is {hh, ht, th, tt}. a = b = c = f

What are the solutions of the following system? y=-2x^2 y=x-2