David was thinking of a number. David adds 7, then divides by 8 to get an answer of 4. What was the original number?

Blank × 10-3 is 2,000 times greater than 1.9 × 10-6. it is also blank times greater than 9.5 × 10-4.

If i have a 24 in loaf of bread and i cut it into two pieces one 9 in how long was the other

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?