Find the sum
1/(1x3) + 1/(2x4) + 1/(3x5) + + 1/(98x100)

Tim open up a new saving account with a $50 deposit and plant to deposit $20 per week into the same account.write an expression to represent the total amount in his savings account.

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog

Multiply and simplify. 2x2y3z2 · 4xy4x2 how to do?