Exponential Functions by Boxed Rockets

A is (0,4) and
B is (2,100)

y = 4 \times 5^{x}

A is (0,5) and
B is (2,20)

y = 5 \times 2^{x}

A is (0,4) and
B is (1,16)

y = 4 \times 4^{x}

A is (2,8) and
B is (4,32)

y = 2 \times 2^{x}

A is (4,-243) and
B is (5,-729)

y = -3 \times 3^{x}

A is (1,15) and
B is (5,1215)

y = 5 \times 3^{x}