exam Maths Puzzle Numerical Ability

Carol has more than 80 coins, all nickels and dimes. She has dimes than nickels. What is the least number that Carol can have.

Read Solution (Total 0)

exam Other Question

Find the vertex, the line of symmetry, and the maximum/minimum value of f(x). Then, graph the function.

f(x) = -(x+2)^2 - 4

The vertex is:
The line of symmetry is:
The maximum/minimum value is:
Graph the function.
Not owning, need help...
err, its a function.
2x+y=6