answer:x = -1 and x = 4
w = 4
add 16 to each side
w-16+16 = -12+16
w = 4
you bought a little bit less than you needed
so if it takes 7 yards to make three jackets and you have 15 yards this is what you have to do:
7 yards=3 jackets
7+7=14 so with 14 yards you can make 6 jackets
but you bought fifteen and 7 divided 3 equals 2.3 ( or what it takes to make one jacket)
so if you wanted to have exactly enough material to make 7 jackets you need 16.3 yards
hello from mrbilldoesmath!
first glance at the numbers shows each term is 1 larger than the preceding terms. so we are adding the constant 1 to each term to get the next term. this is an arithmetic progression.